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Re: st: Could not find feasible values(was: Syntax problems with maximum likelihood (method lf))


From   "Katia Bobulova" <katia.bobulova@googlemail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Could not find feasible values(was: Syntax problems with maximum likelihood (method lf))
Date   Thu, 30 Oct 2008 13:03:15 +0000

Dear Martin and Al,

thank you for your answer.

Al, could you please explain me how to put a counter? If it is not too
complicated of course.

Thanks
Katia

2008/10/30 Katia Bobulova <katia.bobulova@googlemail.com>:
> Dear all,
>
> thank you very much for your answers.
>
> I finally sorted out the problem with my program.
>
> However, when I typed ml check I received this message:
>
> The initial values are not feasible.  This may be because the initial
> values have been chosen poorly or because there is an error in my
> program and it always returns missing no matter what the parameter
> values.
>
> Stata is going to use ml search to find a feasible set of initial
> values. If myprogram is broken, this will not work and you will have
> to press Break to make ml search stop.
> Searching...
> initial:       log likelihood =     -<inf>  (could not be evaluated)
> searching for feasible values ..................................................
> could not       find    feasible        values
> r(491);
>
> What should I do to modify myprogram so that it works? Is it possible
> that the problem is the number of observations, i.e. they are not
> enough?
>
> Could you please help me?I have really no idea of how to adjust my data.
>
> Thanks
> Katia
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